This is a blended unit based on Unit 3 of the second grade Everyday Math series.

This unit will focus on strategies for solving subtraction problems within 20.  Students will learn strategies including: counting up and back on a open number line, using their knowledge of addition/subtraction facts within 10 to solve larger problems, and using doubles facts to solve subtraction problems.  This unit builds on the last unit as students lean on their addition knowledge to help with subtraction. The big goal is for students to develop fluency with subtraction facts within 20.

For this assessment task, students solve a word problem using numbers, an equation, and a number line diagram.

This short video and interactive assessment activity is designed to teach second graders about subtracting 3 numbers - word problems.

This resource is from Tools4NCTeachers. This file contains a set of 2 tasks (including scoring rubric and student recording sheet).  The tasks may be used for instruction or assessment. Remix this resource to include student work samples or addtional tasks.

This resource is from Tools4NCTeachers. In this lesson, students develop strategies for adding 3-digit numbers, with a focus on adding in chunks.  Students build this strategy of adding in chunks by mentally adding 10 and 100 to numbers, and adding on the number line. Remix this lesson to include extension activities such as math stations.

This resource is part of Tools4NCTeachers.

In this lesson, students explore approaches for adding three two-digit numbers.

This resource is from Tools4NCTeachers.This file contains sample anchor charts to create with students. Anchor charts are to be made with students, then displayed as a classroom reference. Parents may also benefit from seeing anchor charts, as they provide a snapshot into the math class.Remix this resource to include pictures of your own anchor charts.

This resource is from Tools4NCTeachers.  In this lesson, students determine whether or not they have enough money to purchase popcorn in addition to movie tickets. They then determine whether or not there will be change and if so, how much change they would receive. Printable student sheets are provided in this lesson.

This resource is from Tools4NCTeachers.A Common Formative Assessment (CFA) provides a snapshot of current student understanding. It serves as a checkpoint, and may be used to guide future whole and small group instruction. This CFA addresses 2nd grade, Cluster 5 standards.

The Family Letters are intended to be sent home at the beginning and middle of the cluster. They explain big ideas of the cluster using family-friendly language. Families can also find tips for working with their children at home, digital games, videos, and books. This file contains both English and Spanish versions of the Family Letters.

This resource is from Tools4NCTeachers.Math games are fun, motivating, and provide opportunities for students to build number concepts, reasoning, and fluency. These games may be used as math stations or as whole group learning opportunities. This file contains directions and materials for Cluster 5 math games

The intended purpose of this document is to provide teachers with a tool to determine student understanding and suggest instructional moves that may help guide a student forward in their learning. It is not an exhaustive list of strategies.

This resource is part of Tools4NCTeachers.

In this lesson, students build a two digit number using tens frames and then investigate strategies for determining how far the number is from 100. Students will write an equation to represent their thinking.

This resource is from Tools4NCTeachers.In second grade, students learn to add and subtraction using strategies based on place value and number relationships.  They use a variety of representations such as base ten drawings and number lines.  Second graders do not learn the standard algorithm.  This resource outlines second grade addition and subtraction strategies 

This resource is part of Tools4NCTeachers.

This file contains several tasks assessing standards OA.1 and NBT.6, and MD.8. Each task is a separate attachment with its own materials and scoring rubric. This assessment may be used for instructional or assessment purposes.

This instructional task requires students to add four numbers to find the solution.